JPS6044491B2 - Engine lubricating oil consumption measuring device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an engine lubricating oil consumption measurement device for measuring engine lubricating oil consumption.

A conventional engine lubricating oil consumption measuring device is designed as shown in Fig. 1, in which lubricating oil in oil pan a is pumped into measuring oil tank c at regular intervals until a predetermined oil level is reached. The amount of engine lubricating oil consumed is measured by measuring the amount of lubricating oil with a scale d, returning it to the oil pan a, and comparing the amount of oil handled at this time.

Other conventional examples include JP-A-50-73303
There is something shown in the specification of the No.

In this known example, a lubricating oil supply mechanism consisting of a solenoid valve installed in the middle of a supply pipe connected to an oil pan and a pump that supplies lubricating oil to the supply pipe detects the lower limit amount of the oil pan using a level detector. operates intermittently via a timer,
The oil pan is configured to be stopped when the upper limit amount of the oil pan is detected by another level detector. It is difficult to automate the former consumption measuring device of the above-mentioned conventional example, and if it were to be automated, there was a problem that it would require multiple mechanisms and increase costs.

In addition, the above-mentioned conventional apparatus had a structure in which the supply and measurement of lubricating oil to the oil pan were carried out separately, resulting in a wasteful structure. On the other hand, in the latter conventional example, two level detectors detect the lower and upper limits of the amount of lubricating oil in the oil pan, and lubricating oil is supplied to the oil pan by a pump that is intermittently driven by a timer. The problem was that the configuration was complex and expensive.

Furthermore, in this conventional example, a highly accurate flow meter must be used to accurately measure the amount of lubricating oil supplied to the oil pan, making the device expensive. The present invention has been made in consideration of the above-mentioned problems.It has a simple configuration, can be easily automated, and moreover, can automatically replenish lubricating oil and can measure it more accurately. The present invention aims to provide a consumption measuring device.

The structure will be explained below based on the embodiment shown in FIG. 2 and below.

In the figure, 1 is an engine, and 2 is its oil pan. A level detector 4 for detecting the lower limit of the amount of lubricating oil in the oil pan 2 is connected to the oil pan 2 via a hose 3.

5 is a level adjustment stand for supporting the level detector 4 and adjusting its height, and 6 is a drain cock. On the other hand, 7 is a supply port for lubricating oil, and a float tank 9 provided at a position higher than the oil pan 2 is connected to this port via a supply pipe 8.

Two solenoid valves 10 and 11 are installed in series in this supply pipe 8, and a fixed volume container 12 is placed in the upper part of the pipe between the two solenoid valves 10 and 11. It is located and connected. This container 12 is located higher than the oil pan 2, and the filling level of the container 12 and the liquid level of the float tank 9 are the same. It's becoming like that. The operating portions of the two electromagnetic valves 10 and 11 are controlled by signals from the level detector 4 via a control device 13.

FIG. 3 shows an example of a sequence circuit of the control device 13, in which 14 is a control circuit for the solenoid valve 10 located on the downstream side with respect to the container 12, and 15 is a control circuit of the solenoid valve 10 located on the upstream side with respect to the container 12. A control circuit for the valve 11, where L is a level contact that is provided in the downstream control circuit 15 and opens and closes according to the level signal of the level detector 4, and Vl and V2 are the respective electromagnetic valves 10, 11, Tl, and T2. is a timer, and TlB and T2B are constant values for each timer. It is a closed contact.

Further, Rl and R2 are relays, and RlA and R2A are normally open relay contacts. In the above configuration, when the lubricating oil in the oil pan 2 decreases and reaches a predetermined level L, the level contact L of the level detector 4 closes.

This level contact L. When closed, relay RlA is activated, Vl and Tl are activated, the downstream solenoid valve 10 is opened, and the container 1
A certain amount of lubricating oil is supplied into the oil pan 2 from 2.
At this time, the upstream electromagnetic valve 11 is closed. When sufficient time has elapsed for the lubricating oil in the container 12 to become empty after the solenoid valve 10 on the downstream side opens, the timer T1 operates and the timer contact Tl8 opens, which causes the relay R1 to operate and the relay contact RlA to open. The solenoid valve 10 on the downstream side is closed. When the timer contact TlB opens, the switch in the control circuit 15 of the upstream solenoid valve 11 closes, and similarly to the downstream side, the upstream solenoid valve 11 opens, causing the float tank 9 to flow naturally from the float tank 9 in the container 12. The lubricating oil is filled by flowing down. The filling amount at this time is always kept constant by the float tank 9. After sufficient time has elapsed to fill the container 12, the upstream solenoid valve 11 is closed by the action of the timer T2. The above operations are repeated. l
By making the above level contact L as shown in Fig. 4, providing output terminals 16 and 17 to the recorder in the circuit of this level contact L, and connecting a pen recorder 18 etc. to this, it is possible to monitor the passage of time. The opening/closing gap of each of the level contacts L can be recorded, and thereby the amount of lubricating oil consumed can be automatically measured.

In addition, by connecting a time recorder instead of the pen recorder 18, the opening and closing of the level contact L can be controlled by number, date,
It can print and record hours, minutes, and seconds. In addition, a microcomputer and an integrated fuel consumption meter are connected in place of the control device 13 of the above embodiment, and the fuel consumption amount (integrated value) QFi of the engine 1 at the moment when the lubricating oil level reaches the L level and this By inputting the current time 1, the current time Ti, and the capacity ΔQO of the container 12,
Time (day, hour, minute, second) Ti and cumulative fuel consumption QFi
, the cumulative lubricating oil consumption Q6l, the fuel consumption per unit time Qpi, the lubricating oil consumption per unit time QOi, and the lubricating oil consumption rate 0ci are printed out and can be obtained on the output side.

The calculation formulas at this time are: QOi=QOi-1+ΔQO ΔTi=Ti-Ti-1 ΔQFi=QFi-QFi-1 qFi=ΔQFi/ΔTi qOi=ΔQO/ΔTi Oci=ΔQO/ΔQpi×100 However, the above symbols In the suffix, i is data at L level, and i-1 is data immediately before L level.

Further, Ti-1, Qpi-1, and QOi-1 are recorded in the memory. A level detector 4 for detecting the lower limit of the amount of lubricating oil in the oil pan 2 is connected to the oil pan 2, and a level detector 4 is connected to the oil pan 2 through a supply pipe 8 to the lubricating oil supply port 7 of the oil pan 2. Float tank 9 installed in a high position
and two solenoid valves 10 and 11 are interposed in series in the supply pipe 8, and a constant volume container 12 is placed in the pipe between the two solenoid valves 10 and 11 above the pipe. The container 12 is placed higher than the oil pan 2, and the filling level of the container 12 is made the same as the liquid level of the float tank 9, and the two electromagnetic valves 10, 11
Since the engine lubricating oil consumption measuring device is constructed in which the operating part of the engine lubricating oil is connected to the signal generating part of the level detector 4 via the control device 13, automation can be easily achieved with a simple configuration. Oil replenishment can be done automatically and measurements can be made more accurately.

Further, according to the present invention, the following effects unique to the present invention can be achieved. (1) Since control is performed by detecting only the lower limit of the oil level in the oil pan 2, it is possible to detect the most stable oil level and oil temperature in the oil pan 2 after long-term operation. The measurement accuracy is high, and it is not affected by changes in the oil level and oil temperature immediately after lubricating oil is supplied.

(2) When replenishing lubricating oil, a fixed amount of oil measured in advance in the container 12 is supplied, so there is no oversupply and it is independent of changes in the oil level and temperature in the oil pan 2 after replenishment. The supply amount can be measured accurately.

(3) When automatically recording lubricant consumption, the amount of replenishment does not change each time, so you only need to count the number of replenishments, and you can print out the replenishment time each time by linking it with a time recorder. More accurate automatic recording is possible, and an automatic recording system can be constructed at a very low cost.

(4) A level detector that accurately detects the oil level in the oil pan 2 is quite expensive, but according to the present invention, only one level detector is required, and from this point of view as well, the device can be configured at low cost.

[Brief explanation of the drawing]

Fig. 1 is a configuration explanatory diagram showing an example of a conventional engine lubricating oil consumption measurement device, Fig. 2 is a configuration explanatory diagram showing an embodiment of the present invention, Fig. 3 is a circuit diagram of a control device, and Fig. 4 2 is a circuit diagram of main parts showing another example of the control device. FIG. 2 is an oil pan, 4 is a level detector, 7 is a supply port, 8 is a supply pipe, 9 is a float tank, 10 and 11 are solenoid valves, 1
2 is a container, 13 is a control device.

Claims (1)

[Claims] 1 A level detector 4 for detecting the lower limit of the amount of lubricating oil in the oil pan 2 is connected to the oil pan 2, and a level detector 4 is connected to the oil pan 2 through a supply pipe 8 to the lubricating oil supply port 7 of the oil pan 2. A float tank 9 installed at a higher position is connected, two electromagnetic valves 10 and 11 are interposed in series in the supply pipe 8, and a constant volume A container 12 is positioned above and connected to this conduit,
And if this container 12 is made higher than the oil pan 2,
In both cases, the filling level of the container 12 and the liquid level of the float tank 9 are made the same, and the operating parts of the two electromagnetic valves 10 and 11 are connected to the signal generating part of the level detector 4 via the control device 13. An engine lubricating oil consumption measuring device characterized by: